创建maven项目
    引入编写starter所需要的spring依赖

    1. <dependency>
    2.             <groupId>org.springframework.boot</groupId>
    3.             <artifactId>spring-boot-configuration-processor</artifactId>
    4.             <optional>true</optional>
    5.             <version>2.2.1.RELEASE</version>
    6.         </dependency>
    7.         <dependency>
    8.             <groupId>org.springframework.boot</groupId>
    9.             <artifactId>spring-boot-autoconfigure</artifactId>
    10.             <version>2.2.12.RELEASE</version>
    11.         </dependency>
    1. 编写Properties类、主要用于接受spring-boot启动时候application.properties/yml文件的配置参数
    1. package com.enna.test;
    3. import org.springframework.boot.context.properties.ConfigurationProperties;
    4. import org.springframework.stereotype.Component;
    6. /**
    7.  * @author DELL
    8.  * @version 1.0
    9.  * @date 2021/3/11 16:29
    10.  */
    11. @Component
    12. @ConfigurationProperties(prefix = "test")
    13. public class PropertyDemo {
    14.     private String name;
    15.     private String age;
    16.     public String getName() {
    17.         return name;
    18.     }
    19.     public void setName(String name) {
    20.         this.name = name;
    21.     }
    22.     public String getAge() {
    23.         return age;
    24.     }
    25.     public void setAge(String age) {
    26.         this.age = age;
    27.     }
    28. }
    1. 编写AutoConfiguration配置文件
    1. package com.enna.test;
    3. import org.springframework.boot.context.properties.EnableConfigurationProperties;
    4. import org.springframework.context.annotation.Bean;
    5. import org.springframework.context.annotation.Configuration;
    7. /**
    8.  * TODO
    9.  *
    10.  * @author DELL
    11.  * @version 1.0
    12.  * @date 2021/3/11 16:31
    13.  */
    14. @Configuration
    15. @EnableConfigurationProperties(TestProperty.class)
    16. public class TestAutoConfiguration {
    17.         //currentUsers为自定义测试新建的对象
    18.     @Bean
    19.     public CurrentUsers users(TestProperty testProperty) {
    20.         TestUsers testUsers = new TestUsers();
    21.         System.out.println( "注入testUsers" );
    22.         System.out.println( testUsers );
    23.         return testUsers;
    24.     }
    25. }
    1. 在resource目录下面创建META-INF/spring.factories文件
      spring-boot创建starter项目 - 图1

    至此starter简易demo编写完成，采用maven的package打包 然后丢入所需要的starter项目
    spring-boot创建starter项目 - 图2